.main {
    width: calc(100% - 280px);
    height: 100%;
        min-height: 100vh;
        margin-left: 280px;

        background-size: cover;
        background-position: center;
        background-attachment: fixed;

        display: flex;
        align-items: center;
        justify-content: center;
}

.main .container {
    width: 580px;
    border-radius: 15px;
    padding: 15px;
    background-color: rgba(255, 255, 255, 40%);
    box-shadow: 2px 2px 10px 0 #000;
}

.main .container table {
    width: 100%;
    font-size: 26px;
}

.main .container th {
    background-color:  rgba(22, 112, 219, 0.8);
}

.main .container td,
.main .container th {
    border: 1px solid #000;
    padding: 2px 6px;
}

.main .container td:nth-child(1),
.main .container td:nth-child(3) {
    text-align: center;
    width: 140px;
}